package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    public static  final  String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private WeChatProperties weChatProperties;

    @Autowired
    private UserMapper userMapper;
   public User wxLogin(UserLoginDTO userLoginDTO){
    String openid = getOpenid(userLoginDTO.getCode());

       if (openid == null){
           throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
       }
         User user =userMapper.getByOpenid(openid);

       if (user == null){
           user = User.builder()
                   .openid(openid)
                   .createTime(LocalDateTime.now())
                   .build();
           userMapper.insert(user);
       }
       return user;
   }
   private String getOpenid(String code){
       Map<String, String> map = new HashMap<>();
       map.put("appid",weChatProperties.getAppid());
       map.put("secret",weChatProperties.getSecret());
       map.put("js_code",code);
       map.put("grant_type","authorization_code");
       String json = HttpClientUtil.doGet(WX_LOGIN,map);

       JSONObject jsonObject = JSON.parseObject(json);
       String openid = jsonObject.getString("openid");
       return openid;
   }


}
